Calflora
Taxon  Report   4008    
Hazardia detonsa  (Greene) Greene
Island bristleweed,  Island hazardia, Northern island haplopappus, Northern islands hazardia
Hazardia detonsa
© 2009 Zoya Akulova
Photos from
CalPhotos / Calflora
Hazardia detonsa
© 2013 James Gonsman
Hazardia detonsa
© 2014 Roy West
Hazardia detonsa, a dicot, is a shrub that is native to California, is endemic (limited) to California.
also called Haplopappus detonsus
California Rare Plant Rank: 4.3 (limited distribution).   8th Edition

Interactive Distribution Map


Observation Hotline
(observation details)



point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations



Bloom Period
Hazardia detonsa
© 2015 James Gonsman
Family: ASTERACEAE  
Genus: Hazardia
Communities: Coastal Sage Scrub
Name Status:
Accepted by JEF + CNPS + PLANTS

Alternate Names:
CNPS + PLANTS: Haplopappus detonsus
More information about  Hazardia detonsa
Nursery / seed vendor availability from CNPLX
This plant is available commercially.
Landscaping information from Calscape
Photos on PlantID.net   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation

USDA PLANTS Profile (HADE4)

Search the International Plants Names Index

Search efloras.org (Flora of North America)

website references from Google


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: Jan 22, 2019).